18531128

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25532872

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 67, 77, 88, 134, 154, 268, 308, 449, 469, 536, 616, 737, 898, 938, 1474, 1796, 1876, 2948, 3143, 3592, 3752, 4939, 5159, 5896, 6286, 9878, 10318, 12572, 19756, 20636, 25144, 30083, 34573, 39512, 41272, 60166, 69146, 120332, 138292, 210581, 240664, 276584, 330913, 421162, 661826, 842324, 1323652, 1684648, 2316391, 2647304, 4632782, 9265564, 18531128]

約数ペア:

[(1, 18531128), (2, 9265564), (4, 4632782), (7, 2647304), (8, 2316391), (11, 1684648), (14, 1323652), (22, 842324), (28, 661826), (44, 421162), (56, 330913), (67, 276584), (77, 240664), (88, 210581), (134, 138292), (154, 120332), (268, 69146), (308, 60166), (449, 41272), (469, 39512), (536, 34573), (616, 30083), (737, 25144), (898, 20636), (938, 19756), (1474, 12572), (1796, 10318), (1876, 9878), (2948, 6286), (3143, 5896), (3592, 5159), (3752, 4939)]